Vulnerability Alert

Cisco Industrial Ethernet 3000 Series Switches Default Simple Network Management Protocol Community Names Unauthorized Access Vulnerability

 
Threat Type:CWE-287: Authentication Issues
IntelliShield ID:20809
Version:1
First Published:2010 July 07 16:01 GMT
Last Published:2010 July 07 16:01 GMT
Port: Not available
CVE:CVE-2010-1574
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:10.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:8.3
 
Version Summary:

Cisco Industrial Ethernet 3000 Series Switches contain a vulnerability that could allow an unauthenticated, remote attacker to gain unauthorized access.  Workarounds are available.

 
 
Description

Cisco Industrial Ethernet 3000 Series Switches running certain Cisco IOS Software releases contain a vulnerability that could allow an unauthenticated, remote attacker to gain unauthorized access.

The vulnerability exists because insecure default Simple Network Management Protocol (SNMP) community names are hard coded into the affected software.  An unauthenticated, remote attacker could exploit this vulnerability to gain unauthorized access to a targeted device and potentially gain complete control over the device.

Cisco confirmed this vulnerability in a security alert and released workarounds.

 
Warning Indicators

Cisco IOS Software releases 12.2(52)SE, 12.2(52)SE1, 12.2(53)SE, and 12.2(53)SE1 are vulnerable when running on Cisco Industrial Ethernet 3000 Series Switches.

 
IntelliShield Analysis

To exploit this vulnerability, an attacker must be able to send SNMP requests to a targeted device.  The attacker would likely require access to internal networks to send SNMP requests, increasing the difficulty of an exploit.  If successful, the attacker could completely compromise a targeted device.

Cisco IOS Software releases prior to 12.2(52)SE do not contain the vulnerability.  Updated software is not yet available, but should be released by August.

 
Vendor Announcements

Cisco has released a security advisory for Cisco bug ID CSCtf25589 at the following link: cisco-sa-20100707-snmp

 
Impact

An unauthenticated, remote attacker could exploit this vulnerability to gain unauthorized access to a targeted device, possibly allowing the attacker to gain complete control over a vulnerable system.

 
Technical Information

The vulnerability exists because insecure default SNMP community names are hard coded into the affected software.  The default SNMP community names allow read and write access.  Although an administrator can remove the names, they are restored when the device restarts.

An unauthenticated, remote attacker who knows the default credentials could gain unauthorized access to a targeted device.  The attacker could use this access to take complete control over the device.

 
Safeguards

Administrators are advised to apply updates as they become available.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to create an Embedded Event Manager (EMM) policy on an affected device to remove the default SNMP community names each time the device starts.

Administrators are advised to monitor critical systems.

 
Patches/Software

Software updates are not yet available.


Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
4512/0SNMP Community String PublicS5792011 Jul 05 
6003/0SNMP Community String PrivateS5792011 Jul 05 
 
Alert History
 

Initial Release



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
N/A

Associated Products:
N/A




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LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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